Jennifer Aniston and John Mayer Photo by: Fame Pictures
John and Jen Hit Amsterdam | Jennifer Aniston, John Mayer
Jennifer Aniston and John Mayer are both busy working abroad – and making the most of their time overseas.

After Mayer, 30, played a set at Picnic in the Park in Den Haag outside Amsterdam on Sunday, he stuck around until Tuesday afternoon – despite the fact that he was due in the U.K. for a show that night.

Why the extended layover? Aniston, 39, was in town to attend the 2008 Cinema Expo to promote her upcoming film Marley & Me, along with costar Owen Wilson.

Aniston and Mayer – who recently jetted to Mexico for a romantic getaway – were checked into separate hotels in Amsterdam, but Mayer didn't appear to spend much time at his: After a night out he returned around noon on Tuesday before leaving for his show in England.

With her boyfriend away, Aniston turned tourist, taking a sightseeing boat tour of Amsterdam's complex series of canals.
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